Treating brewers&#39; and distillers&#39; slop.



oURr JULIUS ROEHR, or PHILADELPHIA, PENNSYLVANIA.

Specification of Letters Patent.

TREATING BREWERS AND DIST-ILLERS" sLoP.

- Patented June 12, 1906.

' f Application filed 1M1. 13,1905. Serial in. 249,935.

To all whom it may concern:

Be it known that I, OURT JULIUS RQEHR, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Treating Brewers and Distillers Slop, of'which the following is a specification.

l The object of my invention is to recover from brewers or distillers slob in edients of the same which are valuable in't e art, but which are now permitted to run to waste. This object I attai n by first precipitating the protein .andfibrous matters contained in the slop by adding thereto an alkaline solution of mineral matter which is insoluble in water and then subjecting the slop thus treated to the action of a-filter-press, whereby the precipitated' matters can be readilyseparated from the clear liquid, the latter containing glycerin, dextrin, and other gums and cominations of or anicacids with sodium oxid. This clear liqui can then be concentrated by evaporation to a syrup-like form, and in this condition will constitute a valuable addition to sizing compounds for textile purposes, d e solutions, pastes, soaps, &c., or, 1f. desired, the component parts of the liquid ma be readily separated from each other by tli ment of well-known means. I

As an instance of one method of carrying out my invention which has provento be effective in practice I may state that I have added to two thousand pounds of slop heated .to a temperature of about two hundred (200) degrees Fahrenheit a solution of ten pounds of silicate of soda in twelve and one-half gal lons of Water. The effect of this treatment is twofold,-the chemical reaction between, the lactic acid of'the slop and the alkali freeing from the latter the mineral matter and also freeing from the acid the protein held in solution or distribution therein, both the protein and mineral matter being recipitated and the protein beingrdeposite upon said mineral ,matter in such manner that it w l not interfere with proper filt n action, Aftersuch precipitation has been completed the slop subjected to the action of a filterpress of any desired character through which e employthe clear liquor will pass, leaving behind a solid cake of the residue. F f

Instead of usinga solution of silicateof soda I may use a solution of hydroxid of aluminium or zinc in caustic soda of patash or a solution of hydroxid of copper, zinc, nickel, cobalt, or silver, for example, in ammonia, or I may useothermetallic oxids-which are soluble in alkali,- but insoluble in water, and to reduce the cost of the process partial neutralization of the slop -may be effected before the treatment of the same in the manner before described, a cheap and simple method of effecting such partial neutralization being the use of any cheap metal or hydroxid of metal soluble in lactic acid, but insoluble in Water. For instance,the slop may be caused to' flow, in the first instance, over or through.

zinc scra s, whereby the action of the zinc or zinc oxi will effect a partial neutralization of the slop. The strength of the alkaline so lution may also vary, depending upon the character of the slop under treatment.

I do not in this application claim the process for recovering from brewers or distillers slop the protein and fatty matters-contained therein, as' herein disclosed, as this forms the I sub'ect-matter of'my copending application file Janna 9, 1905, Serial No. 240,355.

Havingv thus described my invention, I claim and desire to secure by LettersPatent Q 1. The mode herein described of recovering. glycerin, dextrin, or the like and lact c acld, from brewers or distillers slop, said mode consisting in first precipitating the protein contents of the slop bysubject ng the same while it is maintained in a heated condition to the action of nlineral i'natter d1ssolved in alkali, which mineral matter is not .soluble in Water, then separatlng the clear liquor from the precipitate, andthen without material dilution of said liquor concentrating the latter by evaporation, substantially as specified. r j

2. The mode herein described of-recovering glycerin, dextrin, or-the like, and lactic acid, from brewers or distillers slop, said mode consisting in first precipitating the protein Correction in Letters Patent No. 823,366.-

eontents of the slop bj suh'ecting thesan'ie testimony whereof have signed my while maintainedin a heate condition to the nameto this speclficat on m the presence of 10 action of mineral matter dissolved ingn '51- two subscribing witnesses. kali said mineral matter being \insoln 1e in w 5 water, then separating the clear liqilor ffoi'n GURT JULIUS E the precipitate by filtration, and then cen- Witnesses: r centrati'ng said liquid, substantially'as s'peci "WiLL, A. BARR, fied. a I JosnH. KLEIN.-

It is hereby certified that in Letters Patent No. 823,366, granted June 12, 1906' upon the apialication of Curt Julius Roehr, of Philadelphia, Pennsylvania, for an A improvement ii Treating Brewers anti. Distillers Slop, an error occurs in the printed specification requiring correction, as follows: In line 9, page 1, the word slob should read slop; and that the said. Letters Patent should be read with this correction therein that the same mayeonforxn to the record of the case in the Patent Ofi'ice. V l I Signed and 'sealed this 26th day of J une, A. D., 1906. I

[SEALJ 11KB. MOORE,

I Acting Commissioner of Patents.

Correction in Letters Patent No. 823,366.-

contents of the slap by suh'ecting the Seine In testimony whereof have signed my while maintainedin a heate condition to the nemeto this speclficat on 111 the presence of 10 action of niinersil matter dgssolved '51- two subscribing witnesses. kali said mineral matter einginso n e in w 5 water, then separating the clear liqilor ffoi'n GURT JULIUS E the precipitate by filtration, and then coin Witnesses: r centrati'ng said liquid, substantially'as s' -em- "WiLL, A. BARR, fied. V I JosnH. KLEIN.-

It is hereby certified that in Letters Patent No. 823,366, granted June 12, 1906' upon the apialication of Curt Julius Roehr, of Philadelphie, Pennsylvania, for an A improvement ii Treating Brewers and. Distillers Slop, an error occurs in the printed specification requiring correction, as follows: In line 9, page 1, the word slob should read slop; and that the said, Letters Patent should be read with this correction therein that the same mayeonforxn to the record of the case in the Patent Ofi'ice. V l I Signed andsealed this 26th day of J une, A. D., 1906. I

[SEALJ 11KB. MOORE,

Acting Commissioner of Patents.

Correction in Letters Patent No. 823,366.

It is hereby certified that in Letters Patent No. 823,366, granted June 12, 1906 upon the application of Curt Julius Roehr, of Philadelphia, Pennsylvania, for an improvement in Treating Brewers and Distillers Slop, an error occurs in the printed specification requiring oorrection, as follows: In line 9, page 1, the word slob should read slop; and that the said Letters Patent should be read with this correction therein that the same mayoonform to the record of the case in the Patent Signed and sealed this 26th day ofune, A. D., 1906.

[SEAL] E. B. MOORE,

Acting Commisainner of Patents. 

